Giant Caddisfly vs Green Sedge

Side-by-side species comparison

Attribute Giant Caddisfly Green Sedge
Scientific Name Phryganea grandis Rhyacophila dorsalis
Order Trichoptera Trichoptera
Family Phryganeidae Rhyacophilidae
Size 25-30 mm 10-14 mm
Habitat Ponds & Lakes Rivers & Streams
Diet Herbivores Predators
Regions Europe, Asia Europe, Asia
Conservation Least Concern Least Concern

Giant Caddisfly

The largest European caddisfly with mottled brown-and-cream wings spanning up to 60 mm. Its larvae build portable cases from spirally arranged plant fragments.

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Did You Know?

Giant caddisfly larvae construct their cases in a beautiful spiral pattern from carefully cut pieces of leaves and stems.

Green Sedge

A free-living caddisfly larva that does not build a case, instead roaming the streambed as an active predator. Adults have greenish wings.

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Did You Know?

Unlike most caddisflies, green sedge larvae are caseless predators that hunt like underwater wolves among the stream cobbles.